A review on the effects of ethanol/gasoline fuel blends on NOX emissions in spark-ignition engines

IF 14.4 Q1 ENERGY & FUELS Biofuel Research Journal-BRJ Pub Date : 2021-12-01 DOI:10.18331/brj2021.8.4.2

P. Iodice, A. Amoresano, Giuseppe Langella

{"title":"A review on the effects of ethanol/gasoline fuel blends on NOX emissions in spark-ignition engines","authors":"P. Iodice, A. Amoresano, Giuseppe Langella","doi":"10.18331/brj2021.8.4.2","DOIUrl":null,"url":null,"abstract":"Ethanol can be used as an alternative fuel for spark-ignition (SI) engines to increase the octane number and oxygen content of ethanol/gasoline blends, thereby reducing dependence on fossil fuels and the exhaust emissions of incomplete combustion products. Although it is widely agreed that ethanol can reduce CO and HC exhaust emissions, the literature on ethanol and NOX emissions is far from conclusive; hence there is a need for an in-depth, updated review of ethanol/gasoline blends in SI engines and the relative production of NOX emissions. In light of that, the present work aims to provide a comprehensive literature review on the current state of ethanol combustion in SI engines to shed definitive light on the potential changes in NOX emissions under various operating conditions. The first part of this paper discusses the feasibility of ethanol as an alternative transportation fuel, including world production and ethanol production processes. The physicochemical properties of ethanol and gasoline are then compared to analyze their effects on combustion efficiency and exhaust emissions. Then, the pathways of NOX formation inside the cylinder of SI engines are discussed in depth. Finally, we review and critically discuss the effects of ethanol concentration in blends and different engine parameters on NOX formation.","PeriodicalId":46938,"journal":{"name":"Biofuel Research Journal-BRJ","volume":" ","pages":""},"PeriodicalIF":14.4000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biofuel Research Journal-BRJ","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18331/brj2021.8.4.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 13

Abstract

Ethanol can be used as an alternative fuel for spark-ignition (SI) engines to increase the octane number and oxygen content of ethanol/gasoline blends, thereby reducing dependence on fossil fuels and the exhaust emissions of incomplete combustion products. Although it is widely agreed that ethanol can reduce CO and HC exhaust emissions, the literature on ethanol and NOX emissions is far from conclusive; hence there is a need for an in-depth, updated review of ethanol/gasoline blends in SI engines and the relative production of NOX emissions. In light of that, the present work aims to provide a comprehensive literature review on the current state of ethanol combustion in SI engines to shed definitive light on the potential changes in NOX emissions under various operating conditions. The first part of this paper discusses the feasibility of ethanol as an alternative transportation fuel, including world production and ethanol production processes. The physicochemical properties of ethanol and gasoline are then compared to analyze their effects on combustion efficiency and exhaust emissions. Then, the pathways of NOX formation inside the cylinder of SI engines are discussed in depth. Finally, we review and critically discuss the effects of ethanol concentration in blends and different engine parameters on NOX formation.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

乙醇/汽油混合燃料对火花点火式发动机NOX排放影响的研究进展

乙醇可用作火花点火式（SI）发动机的替代燃料，以增加乙醇/汽油混合物的辛烷值和氧含量，从而减少对化石燃料的依赖和不完全燃烧产物的废气排放。尽管人们普遍认为乙醇可以减少一氧化碳和碳氢化合物的排放，但关于乙醇和氮氧化物排放的文献远未得出结论；因此，需要对SI发动机中的乙醇/汽油混合物和NOX排放的相对产生进行深入、更新的审查。有鉴于此，本工作旨在提供一份关于SI发动机中乙醇燃烧现状的全面文献综述，以明确说明各种运行条件下NOX排放的潜在变化。本文的第一部分讨论了乙醇作为替代运输燃料的可行性，包括世界生产和乙醇生产过程。然后比较了乙醇和汽油的物理化学性质，分析了它们对燃烧效率和废气排放的影响。然后，对直喷式发动机气缸内NOX的形成途径进行了深入的探讨。最后，我们回顾并批判性地讨论了混合物中乙醇浓度和不同发动机参数对NOX形成的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Biofuel Research Journal-BRJ ENERGY & FUELS-

CiteScore

22.10

自引率

1.50%

发文量

审稿时长

8 weeks

期刊介绍： Biofuel Research Journal (BRJ) is a leading, peer-reviewed academic journal that focuses on high-quality research in the field of biofuels, bioproducts, and biomass-derived materials and technologies. The journal's primary goal is to contribute to the advancement of knowledge and understanding in the areas of sustainable energy solutions, environmental protection, and the circular economy. BRJ accepts various types of articles, including original research papers, review papers, case studies, short communications, and hypotheses. The specific areas covered by the journal include Biofuels and Bioproducts, Biomass Valorization, Biomass-Derived Materials for Energy and Storage Systems, Techno-Economic and Environmental Assessments, Climate Change and Sustainability, and Biofuels and Bioproducts in Circular Economy, among others. BRJ actively encourages interdisciplinary collaborations among researchers, engineers, scientists, policymakers, and industry experts to facilitate the adoption of sustainable energy solutions and promote a greener future. The journal maintains rigorous standards of peer review and editorial integrity to ensure that only impactful and high-quality research is published. Currently, BRJ is indexed by several prominent databases such as Web of Science, CAS Databases, Directory of Open Access Journals, Scimago Journal Rank, Scopus, Google Scholar, Elektronische Zeitschriftenbibliothek EZB, et al.